/Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/DynamicMesh3.h
Get triangles connected to vertex in contiguous order, with multiple groups if vertex is a bowtie.
[EMeshResult](API\Runtime\GeometryCore\UE__Geometry__EMeshResult) GetVtxContiguousTriangles ( int VertexID, [TArray](API\Runtime\Core\Containers\TArray)< int > & TrianglesOut, [TArray](API\Runtime\Core\Containers\TArray)< int > & ContiguousGroupLengths, [TArray](API\Runtime\Core\Containers\TArray)< bool > & GroupIsLoop ) const